From: Kagurazaka Kotori <kagurazakakotori@gmail.com>
Date: Tue, 8 Sep 2020 08:00:02 +0000 (+0800)
Subject: x86/efi: add FAT32 esp mounting support
X-Git-Tag: v21.02.0-rc1~634
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=927b9df938803d409d6b3a47d6834a6c10f68c3d;p=openwrt%2Fstaging%2Fpepe2k.git

x86/efi: add FAT32 esp mounting support

Adds a new function get_magic_fat32() in base-files to read FAT32 magic.
Now FAT32 EFI system partition can be handled in the same way as FAT12/FAT16.

Signed-off-by: Kagurazaka Kotori <kagurazakakotori@gmail.com>
[replace '-o' with '] || [' to satisfy shellsheck]
Signed-off-by: Paul Spooren <mail@aparcar.org>
---

diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh
index b44a5998f4..e8a28f4138 100644
--- a/package/base-files/files/lib/upgrade/common.sh
+++ b/package/base-files/files/lib/upgrade/common.sh
@@ -133,6 +133,10 @@ get_magic_vfat() {
 	(get_image "$@" | dd bs=1 count=3 skip=54) 2>/dev/null
 }
 
+get_magic_fat32() {
+	(get_image "$@" | dd bs=1 count=5 skip=82) 2>/dev/null
+}
+
 part_magic_efi() {
 	local magic=$(get_magic_gpt "$@")
 	[ "$magic" = "EFI PART" ]
@@ -140,7 +144,8 @@ part_magic_efi() {
 
 part_magic_fat() {
 	local magic=$(get_magic_vfat "$@")
-	[ "$magic" = "FAT" ]
+	local magic_fat32=$(get_magic_fat32 "$@")
+	[ "$magic" = "FAT" ] || [ "$magic_fat32" = "FAT32" ]
 }
 
 export_bootdevice() {